A leading al Qaeda member in Afghanistan, Abu Laith al-Libi, has been killed, a Web site often used by the group and other Islamists said on Thursday. A banner on the Ekhlaas.org site said Libi had fallen as a martyr, without giving further details. It was not immediately clear if Libi's death was linked to a suspected U.S. missile strike that killed up to 13 foreign militants in Pakistan's North Waziristan region this week. The attack had targeted second or third tier al Qaeda leaders, according to residents in the tribal area. Tribesmen in the area had said a deputy...